Car truck



April 14, 1931. F. BARBER ET AL CAR TRUCK Original Filed'April 9, 192B /viv/A w/ n INVENTORS Fnazzlin lhanber ATTORNEY Patented Api'.y 14, 1931 y @unirse ermee PATENT clerics FRANKLIN BARBER AND EDWIN WEBB, OF CHICAGO, ILLINOIS, ASSIGNORS, kBY EJIESNE ASSIGNMENTS, T0 THE EE .TE1\[lDORFl COMIANY, OF BETTENDORF, IOWA, A

ooi-'tronn'rioiv or 'IOWA CAR TRUCK Origin-a1 application filed April 9, 1928,;Seria1 No.A 268,511, now Patent No. 1,787,031, dated December 30, 1930. Divided and this applicationled June 11,1930. Serial No. 460,406.

Y This invention relates to railway car trucks and more particularly to .the` construction yof the side frames and lthe mounting of the bolster, spring plank and bolstersupporting springsin the side frames, the present application -being a Vdivision ofy our `co-pending vwithout distortionand further to provide a sideframe whichis so constructed as to permita compact nesting of thebolster supporting springs with the spring nest centered with respect Yto vthe side frames and with all of the springs supported on the tensionchord at the same, level.

A further object is'to provide a truck in which lthe side frames areso constructed as topper-mit 2L, Compact nesting ofthe supporting springs whereby a greater nuiriber of springs maybe employed in a truck of a given` wheel base andin which the springs occupy a4 minimum space longitudinally of the. frame and transversely thereof. l

A further Objectis to providea side frame in which a bolster opening is provided between upright columnsconnecting the compression and tension chords, inlwhich the portion of the tension chord between the columns is formed to provide a flat spring support, extending'from one 'columncto the other sothat theentire space betweenthe columns `maybe utilizedpto receive a` nest of bolsterV supportingsprings and in which the tension chord is eifectually strengthenedby diagonally disposed reinforcing websat opposite sides of the flat spring supporting portion.

A further object is to provide a spring plank whichis formed with latwidened end portionswhich serve ,as `spring seats and which are formed to interlock with the side frames, the. widened portionsl of the ,spring plank -tting inthe recess Abetween the reiiifmrieg-.ivebsf the .narrow ,body :Politie-11.' 0f

the spring plank providing space for the brake beams so that a relatively large number Vof springs maybe employed in a truck having ak relativelyv7 sh ort wheelbase.

A furthery object is to provide a side fraine in which the fullwidth of they bolster opening may be utilized for bolster supporting springs and in which guides are provided for the'bolster which eiectively hold the bolster against lateral, endwiseand turning movements in the side frame.

A further object is to provide a truck hav- `ing side frames with relatively wide bolster openings adapted to accommodate a relativelylong nest of bolster supporting springs andto provide bolster guiding means which does not interfere with the proper positioning of ther brake hanger brackets.

Withthe above and other objects in view,

the invention may be said to comprisethe truck as illustrated vin the accompanying drawings hereinafter. described and particularly set forth in the appendedclaims, to-

` gether with such variations and modifications thereof as will be apparent Ato one skilled in the art to which the invention appertains.`

Reference should be had to the accompanying drawings forming a part of the specification, in which: t

Figure 1 is aside elevation of av car truckv embodying the invention. y

kFigure 2 is a section taken onthe lineV indicated at 2-2 in Fig. 1. Figure 3 is a section taken on the line indicated at 35-3 inFig. 1. v Referring to the accompanying drawings, the truck is provided with side frames each ofwhich may be inthe form of a one piece casti ng, feach havinga compression chord 1 Vand -a tension chord 2, the tension chord having a central r`horizontal spring supporting portion 3 vand inclined 'end` portions 4 which join the horizontal-portion Seto the ends of the compression chord 1. At each end of the horizontal portion 3, the tension chord is connected to the, compression chord by anin ,tegralupright column 5, ,they columns 5 being spacedapart a sufficient distance to forni a bolster receiving opening between them.

The ends. Of e Suite-ble bolster 6 extend, into the bolster receiving opening between the columns 5 and are of a width to lit between the fiat inner faces of the inwardly projecting guide portions 8 of the columns 5.

The ends of the bolster 6 are provided with laterally projecting guide flanges 9 which provide channels to receive the projecting guide Vportions 8 of the columns which terminate a sufficient distance above the bottom of the bolster receiving opening to provide an enlargement 10 in the lower portion ofthe bolster' receiving opening of sufficient width and depth to permit the iianged end of the bolster to be inserted in the opening beneath the guide portions 8 of the columns and to be lifted into interlocking` engagement with the guide portions 8. The sides of the bolster have relatively wide flat faces adapted to bear against the flat faces 8 of the guide columns so that in all positions of the bolster within the bolster receiving openings, the bolster is rigidly held against movements bodily in a lateral direction and against turning movements. In addition, the guide flanges 9 engaging opposite sides of the columns V5 positively hold the bolster against endwise movement.

The horizontal portion 3 of the tension chord has a iiat web 11 extending across the top thereof and projecting laterally'beyond the opposite sides of the body portion of Y the chord forming horizontal side anges 12 which provide a relatively wide spring support immediately beneath the end of the bolster. The flanges 12 are reinforced by vertical webs 13 which connect the under sides of the flanges with the body of the tension chord. The flat web 11 extends from the base of one column 5 to the base of the other so that a relatively wide flat spring support is/provided along the center line of the side frame.

The provision of a relatively long horizontal spring supporting portion in the tension chord tends to weaken the ytension chord since the load imposed through the supporting springs tends to cause the tension member to assume the shape which would be assumed by a flexible tension member supported at the ends of the compression chord andsubjectedto a similar load. The tension chord hasa weak point at the juncture of the horizontal portion with the columns 5 and inclined end portions 4 of the tension chord and, in order to effectively strengthen these portions of the tension chord, reinforcing webs 14 extend across the lower corners of the bolster receiving opening, these webs merging into the flanges 12 `at points spaced inwardly from the columns 5 and extending upwardly from the flanges 12 and merging into the inner and side faces ofthe columns near the junction of the tension chord and i the columns 5. The webs 14 are formed with outer portions forming continuations of the flanges 12 and with inner portions curved inwardly across the faces 8 of the columns 5 toward the center and forming a rounded recess 15 above the web 11 at the base of each of the columns.

lt will be seen, therefore, that due to the provision of the web 14, a very long spring seat may be obtained substantially along the longitudinal center line ofthe side frame without sacrifice of strength. Y

A spring plank 16 of channel form connects the horizontal portions 3 of the opposite side frames and the bottom or web of the channel shaped spring plank which is preferably flat is widened at each end to provide rounded lateral projections 18 which are of a size and shape to substantially t in the rounded recesses 15 at opposite sides of the bolster y opening.

rllhe lateral projections 18 of the spring plank are each ofV a size and shape to accommodate one of the bolster'supporting springs 20 so that the end springs of the group or nest of springs may be positioned in close proximity to the columns 5 and supported at' the same level as the other springs of the group. rlhe width of the bolsterV opening may be varied to provide a seat for as many springs as desirable for the particular truck for which the side frame is designed and the" springs may be arranged with a central row extending centrally of the side frame and with additional springs positionedon opposite sides of the central row and supported by the flanges 12 as shown in Fig. 3.

It will be obvious that various groupings of springs may be employed and that the present invention permits the use of a relatively large number of bolster supporting springs which are all of uniform length and through which the load is transmitted uniformly to the side frames.

It will further be evident that the bolster guiding means provided permits the bolster to have vertical movements, but rigidly holdsthe bolster against'endwise, lateralY and turning movements and that the bolster` is effectively guided by reasonof its full engagement with the fiat inner faces of the guide columns.' y

It will also be apparent that the present invention provides a side frame designed to support a relativelylarge number of bolster springs of uniform lengthV which is eifectually reinforced j against Vdistortion under heavy loads imposed thereon through ythe support- .ing springs. f

lt should also be noted that the bolsterV guiding means permits suspension of the brake beams from supporting lugs indicated at 21 located closely adjacent the bolster receiving opening and that the narrow bolster ineens? be increased without an increasein the length of the wheelbase. l

Furthermore, it is tobe understood that the particular form of apparatus shown and described, and the particular procedure set forth, are presented for purposes of explanation and illustration and that various modiiications of said apparatus and procedure can lofsaid bolster, said columns having laterally extending webs forming the inner faces thereof, each tension chordl having a flat horizonA `talportion extending from the base of one column'to the base of the other and widened inwardly of .the columns and diverging reinforcing Webs on' opposite sides of the hori- -zonta-l portion extending downwardly at an incline from the columns to the horizontal portionv inwardly of the columns, said webs being integral with the columnsy andv merging intozwthe inner faces thereof and a groupy of bolsterv supporting` springs on said horizontal portion, certain springsof said group occupying the spaces adjacent the columns between saidreinforcing webs.

2. In a railway cartruck, a bolster, side frames each having an upper compression chord, a lower tension chord and spaced col-- umns connecting said chords and forming between vthem an opening to receive an end o of said bolster, said'. columns having laterally extending webs forming the inner faces thereof, each tension chord having a flat horizontal portion extending from the base ofonev column-to thev base ofthe other and reinforcing.

. webs on opposite sides thereof extending downwardly at an incline from the columns to the horizontal portion inwardly of the columns, said webs being integral with the columns and merging into the inner faces thereof and a group of bolster supporting springs on said horizontal portion, said group of springs comprising a central row ofy springs between said columns, the endmost springs of whichoccupy the spaces between said reinforcing webs, other springs of said group being positioned on opposite sides vof the central row.

3. In a railway car truck, a bolster, side frames, each having an upper compression chord, a lower tension chord and spaced columns connecting said chords and forming between them-an opening to receive an end of said bolster, said columns having laterally extending webs forming the inner faces thereof, each tension chord having a rhorizontal portion extending from the base of one column to the base of the other and reinforcing lwebs on opposite. sides thereof extending downwardly at anincline from the columns to the horizontal portion inwardly of the columns,y said webs being integral with the columns and merging into the inner faces` thereof, spring plank having widened end portions extendinginto the spaces between the inner and outer reinforcing webs, and a group of bolster supporting springs seated on said plank at'each end thereof.

4l. ln a railway car truck, a bolster, side frames, each having an upper compression chord, a lower tension chord and spaced columns connecting said chords and forming between,l them an openingrtor receive an endof n saidbolster, said columns having laterally extending webs forming the innerfaces thereof, each, tension chord having a horizontal portion extending from the base of one column to the base of the other and reinforcing,

ywebs on opposite sides thereof extending downwardly at an incline from the columns to thehorizontal portion inwardlyA of the columns, said webs beingintegral with `the l columns and merging into the inner faces.. thereof, a spring plank having widened end portions extending intol .the spaces between ythe inner and outer reinforcing webs, anda group of bolster supporting springs seated on said plank at each end thereof, certain of A said springs being seated on the portionsy of the `plank projecting into the spaces between the reinforcing webs.

y 5.. ln a railway car truck, aside frame having an upper compression chord, a tension;Y chord. having a central horizontal spring supporting portion and inclined endy portions joining said central portion with the ends of the compression chord, and upright columns extendingrfrom the ends of the horizontal portion to the .compression chord vand formingbetween them the bolsterl receiving opening, said columns having laterally extending webs forming, the inner facesfthereof, said horizontal portion having avilat top surface.,

extending fromthe base ofone columnto the *basev of the other, and said tensionchordhaving laterally projecting side flanges extending along the top of the horizontal portion truck, a side frame havy rand upwardly at an incline from points spacedlis iss top thereof which are inclined upwardly from points spaced inwardly from the columns and merge into the inner faces of the columns to strengthen the tension chord at the juncture of the horizontal portion with the inclined end, the top face of the horizontal portion being flat and extending to the base of the columns between the inclined portions of the flanges to provide spring receiving recesses adjacent the columns.

7. ln a railway car truck, a side frame having an upper compression chord, a tension chord having a central horizontal portion and inclined end portions oining said central portion with the ends of the compression chord, upright columns extending from the ends of the horizontal portion to the compression chord and forming between them the bolster receiving opening, said columns having inner faces extend-.ingto the horizontal spring supporting portion and inwardly offset upper portions comprising holster guides, said horizontal portion having lateral flanges which are inclined upwardly from points spaced inwardly from thel columns and merge into the inner faces of the columns to strengthen the tension chord at the juncture of the horizontal portion with the inclined end portions, the top face of the horizontal portion extending to the bases of the columns between the inclined portions of the flanges to provide spring receiving recesses adjacent the columns.

8. In a railway car truck, a side frame having an upper compression chord, artension chord having a central horizontal spring supporting portion and inclined end portions joining said central portion with the ends of the compression chord, and upright columns extending from the ends of the horizontal portion to the compression chord and forming between them the-bolster receiving opening, said Columns having laterally extending webs forming the inner faces thereof, said horizontal portion having a flat top surface extending from the base of one column to the base of the other, and said tension chord having side flanges extending along the top of the horizontal portion and upwardly at an incline from points spaced inwardly from the columns, Vsaid inclined portions of the flanges being curved inwardlyV and forming reinforcing webs merging into the faces of the columns, whereby the horizontal spring supporting portion is of greatest length alon the center line thereof.

` 9. n arailway car truck, a side frame having an upper compression chord, a tension chord having a central horizont-al portion and inclined end portions joining said central portion with the ends of the compression chord, and uprioht columns extending from the ends of the horizontal portion to the compression chord and forming between them the bolster receiving opening, said horiclined portions of the flanges to provide spring receiving recesses f adjacent the columns, the inner faces of said columns being paced the full length of the horizontal portion along the longitudinal center line thereof.

l0. ln a railway car truck, a side frame in the form of a casting comprising an upper compression chord and a lower tension chord having a horizontal central portion and inclined end portions connecting the said central portion to the end portions of the compression chord, and upright columns connectingthe ends of the horizontal portion to the compression chord and having webs forming the inner faces thereof, the body of the horizontal portion having a flat top from the web of one column to the web of the ther and having laterally projecting side flanges with horizontal central portions forming extensions of said fiat top and inclined end portions extending upwardly from pointsV spaced inwardly from the columns, and reinforcing ribs interposed between the under sides of the flanges and the side faces of the body of the horizontal por- J.' i

tion.

ln testimony whereof, we aiiix our sig-4^ natures.

FRANKLIN L. BARBER. EDWIN W. WEBB.

i ilo 

